Abstract #3192
Reduced specific absorption rate (SAR) and scan time using variable density Magnetization Transfer (vdMT) for 7T
Se-Hong Oh 1 , Wanyong Shin 1 , Jongho Lee 2 , and Mark J Lowe 1
1
Imaging Institute, Cleveland Clinic
Foundation, Cleveland, OH, United States,
2
Department
of Electrical and Computer Engineering, Seoul National
University, Seoul, Korea
Due to much higher SAR of tissue and much longer
acquisition time, in vivo studies using MT at UHF MRI
has not been feasible in an acceptable scan time. In
this work, we described a novel MT acquisition scheme
within a clinically reasonable time (<6 min). Our
proposed new approach uses a combination of higher
density of MT pulses applied to the center k-space lines
and sparsely applied MT pulses in the outer k-space
lines. With new proposed MT acquisition scheme, the scan
time is reduced considerably while maintaining similar
MTR contrast comparable to conventional MT.
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